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OtlTaskControl.pas
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///<summary>Task control encapsulation. Part of the OmniThreadLibrary project.</summary>
///<author>Primoz Gabrijelcic</author>
///<license>
///This software is distributed under the BSD license.
///
///Copyright (c) 2015, Primoz Gabrijelcic
///All rights reserved.
///
///Redistribution and use in source and binary forms, with or without modification,
///are permitted provided that the following conditions are met:
///- Redistributions of source code must retain the above copyright notice, this
/// list of conditions and the following disclaimer.
///- Redistributions in binary form must reproduce the above copyright notice,
/// this list of conditions and the following disclaimer in the documentation
/// and/or other materials provided with the distribution.
///- The name of the Primoz Gabrijelcic may not be used to endorse or promote
/// products derived from this software without specific prior written permission.
///
///THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
///ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
///WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
///DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
///ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
///(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
///LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
///ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
///(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
///SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
///</license>
///<remarks><para>
/// Home : http://www.omnithreadlibrary.com
/// Support : https://plus.google.com/communities/112307748950248514961
/// Author : Primoz Gabrijelcic
/// E-Mail : [email protected]
/// Blog : http://thedelphigeek.com
/// Contributors : GJ, Lee_Nover, Sean B. Durkin
/// Creation date : 2008-06-12
/// Last modification : 2015-10-04
/// Version : 1.37
///</para><para>
/// History:
/// 1.37: 2015-10-04
/// - Imported mobile support by [Sean].
/// 1.36b: 2015-09-07
/// - Added a debug log (when compiling a Debug build) when TWaitFor.MsgWaitAny
/// returns WAIT_FAILED.
/// 1.36a: 2015-08-28
/// - CheckTimers is no longer called from DispatchOmniMessage if that one was
/// called from CheckTimers.
/// 1.36: 2015-08-27
/// - TOmniWorker message hooks introduced.
/// 1.35: 2014-11-16
/// - IOmniTaskControl can wait on any number of comm handles and wait objects.
/// That enables support for >60 tasks in the OtlThreadPool.
/// 1.34: 2014-11-03
/// - TOmniTaskGroup can now own more than 60 tasks.
/// 1.33a: 2014-09-23
/// - Fixed TOmniTaskControl.SetParameters.
/// 1.33: 2014-09-07
/// - Implemented Run overloads that internally call Invoke to start
/// thread worker.
/// 1.32c: 2014-01-08
/// - Thread priority is set correctly (to 'normal') if it is not explicitly specified.
/// 1.32b: 2013-06-03
/// - Fixed task destruction deadlock introduced in 1.32a.
/// 1.32a: 2013-05-26
/// - Fixed a problem in task destruction sequence.
/// 1.32: 2013-01-30
/// - Added IOmniTaskControl.Stop - signals thread to stop and immediately returns.
/// - Fixed TOmniTaskGroup.TerminateAll.
/// 1.31k: 2012-10-03
/// - Fixed message processing.
/// 1.31j: 2012-10-01
/// - Refactored TOmniTaskExecutor.DispatchEvent a bit more.
/// 1.31i: 2012-09-27
/// - Task controller implements method FilterMessage which allows the event
/// monitor to filter out internal messages.
/// - Removed TOmniTaskControlEventMonitor (no longer needed).
/// 1.31h: 2012-09-24
/// - Fixed bug in TOmniTaskGroup.TerminateAll - maxWait_ms parameter was ignored.
/// 1.31g: 2012-06-18
/// - Fixed race condition in task teardown. Big thanks to [meishier] for putting
/// together a reproducible test case.
/// 1.31f: 2012-04-21
/// - Fixed race condition in InternalStop.
/// 1.31e: 2012-02-07
/// - Bug fixed: Internal event monitor messages must be processed in Terminate,
/// otherwise OnTerminated is not called if the task is terminated from the task
/// controller. Big thanks to [Qmodem] for finding the bug.
/// 1.31d: 2012-02-02
/// - Bug fixed: It was not possible to change timer delay once it was created.
/// Big thanks to [Unspoken] for finding the bug.
/// 1.31c: 2011-12-14
/// - Fixed race condition between TOmniTask.Execute and TOmniTask.Terminate.
/// - Under some circumstances ProcessMessage failed to rebuild handle
/// array before waiting which could cause 'invalid handle' error.
/// 1.31b: 2011-11-08
/// - Fixed invalid "A call to an OS function failed" error in DispatchEvent.
/// 1.31a: 2011-11-06
/// - Fixed wrong order in teardown sequence in TOmniTask.Execute. Great thanks to
/// [Anton Alisov] for providing a reproducible test case.
/// 1.31: 2011-11-05
/// - Adapted to OtlCommon 1.24.
/// 1.30: 2011-11-05
/// - Task parameters are exposed through IOmniTaskControl.Param property.
/// 1.29: 2011-08-27
/// - Implemented another OnTerminated overload acception parameterless anonymous
/// function.
/// 1.28: 2011-07-17
/// - Implemented IOmniTaskControl.DetachException.
/// 1.27: 2011-07-14
/// - IOmniTaskControl implements FatalException property.
/// - Support for non-silent exceptions removed.
/// 1.26a: 2011-07-14
/// - Fixed race condition in TOmniTask.Execute. Big thanks to [Anton Alisov] for
/// providing reproducible test case.
/// 1.26: 2011-07-04
/// - Changed exception handling.
/// 1.25a: 2011-05-27
/// - Passes timer ID to timer proc if it accepts const TOmniValue parameter.
/// 1.25: 2011-04-08
/// - IOmniTaskControl termination empties task message queue and calls appropriate
/// OnMessage handlers.
/// 1.24: 2011-03-16
/// - Implemented IOmniTaskControl.Invoke(procedure) and
/// .Invoke(procedure const task: IOmniTask).
/// - Implemented IOmniTask.Invoke(procedure).
/// 1.23b: 2011-02-28
/// - Bug fixed: Make sure timers are called even if there's a constant stream
/// of messages in registered message queues.
/// 1.23a: 2011-01-07
/// - Bug fixed: Enumerating over TOmniTaskControlList (for example when using
/// IOmniTaskGroup.SendToAll) leaked one object.
/// 1.23: 2010-12-02
/// - Added IOmniTaskControl.CancelWith(token) which can be used to enforce
/// non-default cancellation token.
/// 1.22d: 2010-10-16
/// - Delayed Terminate did not set result.
/// 1.22c: 2010-10-13
/// - Allow Terminate to be called from the OnTerminated handler.
/// 1.22b: 2010-09-21
/// - Better workaround for the 'invalid handle' error.
/// 1.22a: 2010-09-20
/// - Changed the place where internal monitor is destroyed to prevent 'invalid
/// handle' error.
/// 1.22: 2010-07-01
/// - Includes OTLOptions.inc.
/// 1.21c: 2010-06-12
/// - TOmniTaskExecutor must always call Cleanup in case task was not executed.
/// (Issue #19, http://code.google.com/p/omnithreadlibrary/issues/detail?id=19).
/// 1.21b: 2010-05-30
/// - Fixed TOmniTaskControl.WaitFor for pooled tasks.
/// 1.21a: 2010-04-06
/// - [LN] Bug fixed: TOmniTaskControl.WaitFor would hang if thread was
/// terminated externally.
/// 1.21: 2010-03-16
/// - Added support for multiple simultaneous timers. SetTimer takes additional
/// 'timerID' parameter. The old SetTimer assumes timerID = 0.
/// 1.20d: 2010-02-22
/// - D2009 compilation hack moved to OtlCommon.
/// 1.20c: 2010-02-22
/// - A better fix for the D2009 compilation issues, thanks to Serg.
/// 1.20b: 2010-02-21
/// - TOmniTaskControl.otcOnTerminatedExec was not created when OnTerminated
/// function was called with a "reference to function" parameter.
/// - Fixed to compile with D2009.
/// 1.20a: 2010-02-10
/// - Internal message forwarders must be destroyed during task termination.
/// 1.20: 2010-02-09
/// - Added IOmniTaskControl.OnMessage(msgID, handler).
/// 1.19: 2010-02-03
/// - IOmniTaskControl and IOmniTask implement CancellationToken property.
/// 1.18: 2010-02-02
/// - TerminateWhen accepts cancellation token.
/// 1.17: 2010-01-31
/// - Added WithLock overload.
/// 1.16: 2010-01-14
/// - Implemented IOmniTaskControl.UserData[]. The application can store any values
/// in this array. It can be accessed via the integer or string index.
/// 1.15: 2010-01-13
/// - Implemented IOmniTask.GetImplementor.
/// 1.14a: 2009-12-18
/// - Worked around a change in Delphi 2010 update 4.
/// 1.14: 2009-12-12
/// - Implemented support for IOmniTask.RegisterWaitObject/UnregisterWaitObject.
/// 1.13a: 2009-12-12
/// - Raise loud exception for pooled tasks.
/// 1.13: 2009-11-19
/// - Implemented IOmniTaskControl.Unobserved behaviour modifier.
/// 1.12: 2009-11-15
/// - Event monitor notifications implemented with container observer.
/// 1.11a: 2009-11-13
/// - Cleanup in TOmniTask.Execute reordered to fix Issue 13.
/// 1.11: 2009-11-13
/// - Implemented automatic event monitor with methods IOmniTaskControl.OnMessage
/// and OnTerminated. Both support 'procedure of object' and
/// 'reference to procedure' parameters.
/// - D2010 compatibility changes.
/// 1.10: 2009-05-15
/// - Implemented IOmniTaskControl.SilentExceptions.
/// 1.09: 2009-02-08
/// - Implemented per-thread task data storage.
/// 1.08: 2009-01-26
/// - Implemented IOmniTaskControl.Enforced behaviour modifier.
/// - Added TOmniWorker.ProcessMessages - a support for worker to recursively
/// process messages inside message handlers.
/// 1.07: 2009-01-19
/// - Implemented IOmniTaskControlList, a list of IOmniTaskControl interfaces.
/// - TOmniTaskGroup reimplemented using IOmniTaskControlList.
/// 1.06: 2008-12-15
/// - TOmniWorker's internal message loop can now be overridden at various places
/// and even fully replaced with a custom code.
/// 1.05a: 2008-11-17
/// - [Jamie] Fixed bug in TOmniTaskExecutor.Asy_SetTimerInt.
/// 1.05: 2008-11-01
/// - IOmniTaskControl.Terminate kills the task thread if it doesn't terminate in
/// the specified amount of time.
/// 1.04a: 2008-10-06
/// - IOmniTaskControl.Invoke modified to return IOmniTaskControl.
/// 1.04: 2008-10-05
/// - Implemented IOmniTaskControl.Invoke (six overloads), used for string- and
/// pointer-based method dispatch (see demo 18 for more details and demo 19
/// for benchmarks).
/// - Implemented two SetTimer overloads using new invocation methods.
/// - Implemented IOmniTaskControl.SetQueue, which can be used to increase (or
/// reduce) the size of the IOmniTaskControl<->IOmniTask communication queue.
/// This function must be called before .SetMonitor, .RemoveMonitor, .Run or
/// .Schedule.
/// 1.03b: 2008-09-26
/// - More stringent Win32 API result checking.
/// 1.03a: 2008-09-25
/// - Bug fixed: TOmniTaskControl.Schedule always scheduled task to the global
/// thread pool.
/// 1.03: 2008-09-20
/// - Implemented IOmniTaskGroup.SendToAll. This should be looked at as a temporary
/// solution. IOmniTaskGroup should expose communication interface (just like
/// IOmniTask and IOmniTaskControl) but in this case it should be one-to-many
/// queue connecting IOmniTaskGroup's Comm to all tasks inside the group.
/// 1.02: 2008-09-19
/// - Added enumerator to the IOmniTaskGroup interface.
/// - Implemented IOmniTaskGroup.RegisterAllCommWith and .UnregisterAllCommFrom.
/// - Bug fixed in TOmniTaskExecutor.Asy_DispatchMessages - program crashed if
/// communications unregistered inside task's own timer method.
/// - Setting timer interval resets timer countdown.
/// 1.01: 2008-09-18
/// - Implemented SetTimer on the IOmniTask side.
/// - Bug fixed: IOmniTaskGroup.RunAll was not returning a result.
/// 1.0a: 2008-08-29
/// - Bug fixed: .MsgWait was not functional.
/// 1.0: 2008-08-26
/// - First official release.
///</para></remarks>
///Literature
/// - Lock my Object... Please!, Allen Bauer,
/// http://blogs.codegear.com/abauer/2008/02/19/38856
/// - Threading in C#, Joseph Albahari, http://www.albahari.com/threading/
/// - Coordination Data Structures Overview, Emad Omara,
/// http://blogs.msdn.com/pfxteam/archive/2008/06/18/8620615.aspx
/// - Erlang, http://en.wikipedia.org/wiki/Erlang_(programming_language)
/// - A single-word reader/writer spin lock,
/// http://www.bluebytesoftware.com/blog/2009/01/30/ASinglewordReaderwriterSpinLock.aspx
/// - CancellationToken,
/// http://blogs.msdn.com/pfxteam/archive/2009/06/22/9791840.aspx
// TODO 1 -oPrimoz Gabrijelcic : The whole Unobserved mess should go away - task should be implicitly owned ALWAYS
// TODO 3 -oPrimoz Gabrijelcic : Add general way to map unique ID into a task controller/task interface.
// TODO 3 -oPrimoz Gabrijelcic : ChainTo options 'only on success', 'only on fault' (http://blogs.msdn.com/pfxteam/archive/2010/02/09/9960735.aspx)
// TODO 3 -oPrimoz Gabrijelcic : Implement message bus (subscribe/publish)
// http://209.85.129.132/search?q=cache:B2PbIgFSyLcJ:www.dojotoolkit.org/book/dojo-book-0-9/part-3-programmatic-dijit-and-dojo/event-system/publish-and-subscribe-events+dojo+subscribe+publish&hl=sl&client=opera&strip=1
// http://msdn.microsoft.com/en-us/library/ms978583.aspx
// TODO 3 -oPrimoz Gabrijelcic : Could RegisterWaitForSingleObject be used to wait on more than 64 objects at the same time? http://msdn.microsoft.com/en-us/library/ms685061(VS.85).aspx
// TODO 1 -oPrimoz Gabrijelcic : Add cache to TOmniTaskExecutor.DispatchOmniMessage
// TODO 1 -oPrimoz Gabrijelcic : OnTerminated without the 'task' parameter - useful for anonymous functions
unit OtlTaskControl;
{$I OtlOptions.inc}
{$WARN SYMBOL_PLATFORM OFF}
interface
uses
OtlCommon,
{$IFDEF MSWINDOWS}
Windows,
Messages,
DetailedRTTI,
DSiWin32,
GpStuff,
{$ELSE}
Generics.Collections,
{$ENDIF ~MSWINDOWS}
GpLists,
GpStringHash,
SysUtils,
Classes,
SyncObjs,
TypInfo,
OtlSync,
OtlComm,
OtlTask,
OtlContainers,
OtlThreadPool,
OtlContainerObserver;
type
IOmniTaskControl = interface;
TOmniSharedTaskInfo = class;
IOmniTaskControlMonitor = interface ['{20CB3AB7-04D8-454B-AEFE-CFCFF8F27301}']
function Detach(const task: IOmniTaskControl): IOmniTaskControl;
{$IFDEF MSWINDOWS}
function Monitor(const task: IOmniTaskControl): IOmniTaskControl;
{$ENDIF MSWINDOWS}
end; { IOmniTaskControlMonitor }
{$TYPEINFO ON} {$METHODINFO ON}
IOmniWorker = interface ['{CA63E8C2-9B0E-4BFA-A527-31B2FCD8F413}']
function GetImplementor: TObject;
function GetTask: IOmniTask;
procedure SetExecutor(executor: TObject);
procedure SetTask(const value: IOmniTask);
//message loop hooks; temporary solution, will be replaced with a better one
procedure AfterWait(waitFor: TWaitFor; awaited: TWaitFor.TWaitForResult);
procedure BeforeWait(var timeout_ms: cardinal);
procedure MessageLoopPayload;
procedure ProcessThreadMessages;
//
procedure Cleanup;
procedure DispatchMessage(var msg: TOmniMessage);
procedure Timer;
function Initialize: boolean;
property Task: IOmniTask read GetTask write SetTask;
property Implementor: TObject read GetImplementor;
end; { IOmniWorker }
TOmniWorker = class(TInterfacedObject, IOmniWorker)
strict private
owExecutor: TObject; {TOmniTaskExecutor}
owTask : IOmniTask;
strict protected
procedure ProcessMessages;
protected //message loop hooks
procedure AfterWait(waitFor: TWaitFor; awaited: TWaitFor.TWaitForResult); virtual;
procedure BeforeWait(var timeout_ms: cardinal); virtual;
procedure DispatchMessage(var msg: TOmniMessage); virtual;
procedure MessageLoopPayload; virtual;
procedure ProcessThreadMessages; virtual;
protected
procedure Cleanup; virtual;
function GetImplementor: TObject;
function GetTask: IOmniTask;
function Initialize: boolean; virtual;
procedure SetExecutor(executor: TObject);
procedure SetTask(const value: IOmniTask);
public
procedure Timer; virtual;
property Task: IOmniTask read GetTask write SetTask;
property Implementor: TObject read GetImplementor;
end; { TOmniWorker }
{$TYPEINFO OFF} {$METHODINFO OFF}
TOmniTaskProcedure = procedure(const task: IOmniTask);
TOmniTaskMethod = procedure(const task: IOmniTask) of object;
TOTLThreadPriority = (tpIdle, tpLowest, tpBelowNormal, tpNormal, tpAboveNormal, tpHighest);
IOmniTaskGroup = interface;
TOmniTaskMessageEvent = procedure(const task: IOmniTaskControl; const msg: TOmniMessage) of object;
TOmniTaskTerminatedEvent = procedure(const task: IOmniTaskControl) of object;
{$IFDEF OTL_Anonymous}
TOmniOnMessageFunction = reference to procedure(const task: IOmniTaskControl; const msg: TOmniMessage);
TOmniOnTerminatedFunction = reference to procedure(const task: IOmniTaskControl);
TOmniOnTerminatedFunctionSimple = reference to procedure;
{$ENDIF OTL_Anonymous}
{$IFDEF OTL_Anonymous}
TOmniTaskControlInvokeFunction = reference to procedure;
TOmniTaskControlInvokeFunctionEx = reference to procedure(const task: IOmniTask);
{$ENDIF OTL_Anonymous}
TOmniMessageExec = class
strict protected
omeOnMessage : TOmniExecutable;
omeOnMessageDispatch: TObject;
omeOnTerminated : TOmniExecutable;
public
constructor Create(exec: TOmniTaskMessageEvent); overload;
constructor Create(exec: TOmniTaskTerminatedEvent); overload;
constructor Create(dispatch: TObject); overload;
constructor Clone(exec: TOmniMessageExec);
procedure SetOnMessage(exec: TOmniTaskMessageEvent); overload;
procedure SetOnTerminated(exec: TOmniTaskTerminatedEvent); overload;
procedure OnMessage(const task: IOmniTaskControl; const msg: TOmniMessage);
procedure OnTerminated(const task: IOmniTaskControl);
public
{$IFDEF OTL_Anonymous}
constructor Create(exec: TOmniOnMessageFunction); overload;
constructor Create(exec: TOmniOnTerminatedFunction); overload;
procedure Apply(msgID: word; task: IOmniTaskControl);
procedure SetOnMessage(exec: TOmniOnMessageFunction); overload;
procedure SetOnTerminated(exec: TOmniOnTerminatedFunction); overload;
{$ENDIF OTL_Anonymous}
end; { TOmniMessageExec }
IOmniTaskControl = interface ['{881E94CB-8C36-4CE7-9B31-C24FD8A07555}']
function GetCancellationToken: IOmniCancellationToken;
function GetComm: IOmniCommunicationEndpoint;
function GetExitCode: integer;
function GetExitMessage: string;
function GetLock: TSynchroObject;
function GetName: string;
function GetUniqueID: int64;
function GetUserDataVal(const idxData: TOmniValue): TOmniValue;
procedure SetUserDataVal(const idxData: TOmniValue; const value: TOmniValue);
//
function Alertable: IOmniTaskControl;
function CancelWith(const token: IOmniCancellationToken): IOmniTaskControl;
function ChainTo(const task: IOmniTaskControl; ignoreErrors: boolean = false): IOmniTaskControl;
function ClearTimer(timerID: integer): IOmniTaskControl;
function DetachException: Exception;
function Enforced(forceExecution: boolean = true): IOmniTaskControl;
function GetFatalException: Exception;
function GetParam: TOmniValueContainer;
function Invoke(const msgMethod: pointer): IOmniTaskControl; overload;
function Invoke(const msgMethod: pointer; msgData: array of const): IOmniTaskControl; overload;
function Invoke(const msgMethod: pointer; msgData: TOmniValue): IOmniTaskControl; overload;
function Invoke(const msgName: string): IOmniTaskControl; overload;
function Invoke(const msgName: string; msgData: array of const): IOmniTaskControl; overload;
function Invoke(const msgName: string; msgData: TOmniValue): IOmniTaskControl; overload;
{$IFDEF OTL_Anonymous}
function Invoke(remoteFunc: TOmniTaskControlInvokeFunction): IOmniTaskControl; overload;
function Invoke(remoteFunc: TOmniTaskControlInvokeFunctionEx): IOmniTaskControl; overload;
{$ENDIF OTL_Anonymous}
function Join(const group: IOmniTaskGroup): IOmniTaskControl;
function Leave(const group: IOmniTaskGroup): IOmniTaskControl;
function MonitorWith(const monitor: IOmniTaskControlMonitor): IOmniTaskControl;
function MsgWait({$IFDEF MSWINDOWS}wakeMask: DWORD = QS_ALLEVENTS{$ELSE}wakeAll: boolean = true{$ENDIF}): IOmniTaskControl;
function OnMessage(eventDispatcher: TObject): IOmniTaskControl; overload;
function OnMessage(eventHandler: TOmniTaskMessageEvent): IOmniTaskControl; overload;
function OnMessage(msgID: word; eventHandler: TOmniTaskMessageEvent): IOmniTaskControl; overload;
function OnMessage(msgID: word; eventHandler: TOmniMessageExec): IOmniTaskControl; overload;
{$IFDEF OTL_Anonymous}
function OnMessage(eventHandler: TOmniOnMessageFunction): IOmniTaskControl; overload;
function OnMessage(msgID: word; eventHandler: TOmniOnMessageFunction): IOmniTaskControl; overload;
function OnTerminated(eventHandler: TOmniOnTerminatedFunction): IOmniTaskControl; overload;
function OnTerminated(eventHandler: TOmniOnTerminatedFunctionSimple): IOmniTaskControl; overload;
{$ENDIF OTL_Anonymous}
function OnTerminated(eventHandler: TOmniTaskTerminatedEvent): IOmniTaskControl; overload;
function RemoveMonitor: IOmniTaskControl;
function Run: IOmniTaskControl; overload;
function Run(const msgMethod: pointer): IOmniTaskControl; overload;
function Run(const msgMethod: pointer; msgData: array of const): IOmniTaskControl; overload;
function Run(const msgMethod: pointer; msgData: TOmniValue): IOmniTaskControl; overload;
function Run(const msgName: string): IOmniTaskControl; overload;
function Run(const msgName: string; msgData: array of const): IOmniTaskControl; overload;
function Run(const msgName: string; msgData: TOmniValue): IOmniTaskControl; overload;
{$IFDEF OTL_Anonymous}
function Run(remoteFunc: TOmniTaskControlInvokeFunction): IOmniTaskControl; overload;
function Run(remoteFunc: TOmniTaskControlInvokeFunctionEx): IOmniTaskControl; overload;
{$ENDIF OTL_Anonymous}
function Schedule(const threadPool: IOmniThreadPool = nil {default pool}): IOmniTaskControl;
{$IFDEF MSWINDOWS}
function SetMonitor(hWindow: THandle): IOmniTaskControl;
{$ENDIF MSWINDOWS}
function SetParameter(const paramName: string; const paramValue: TOmniValue): IOmniTaskControl; overload;
function SetParameter(const paramValue: TOmniValue): IOmniTaskControl; overload;
function SetParameters(const parameters: array of TOmniValue): IOmniTaskControl;
function SetPriority(threadPriority: TOTLThreadPriority): IOmniTaskControl;
function SetQueueSize(numMessages: integer): IOmniTaskControl;
function SetTimer(interval_ms: cardinal): IOmniTaskControl; overload; deprecated {$IFDEF Unicode}'use three-parameter version'{$ENDIF Unicode};
function SetTimer(interval_ms: cardinal; const timerMessage: TOmniMessageID): IOmniTaskControl; overload; deprecated {$IFDEF Unicode}'use three-parameter version'{$ENDIF Unicode};
function SetTimer(timerID: integer; interval_ms: cardinal; const timerMessage: TOmniMessageID): IOmniTaskControl; overload;
function SetUserData(const idxData: TOmniValue; const value: TOmniValue): IOmniTaskControl;
procedure Stop;
function Terminate(maxWait_ms: cardinal = INFINITE): boolean; //will kill thread after timeout
function TerminateWhen(event: TOmniTransitionEvent): IOmniTaskControl; overload;
function TerminateWhen(token: IOmniCancellationToken): IOmniTaskControl; overload;
function Unobserved: IOmniTaskControl;
function WaitFor(maxWait_ms: cardinal): boolean;
function WaitForInit: boolean;
function WithCounter(const counter: IOmniCounter): IOmniTaskControl;
function WithLock(const lock: TSynchroObject; autoDestroyLock: boolean = true): IOmniTaskControl; overload;
function WithLock(const lock: IOmniCriticalSection): IOmniTaskControl; overload;
//
property CancellationToken: IOmniCancellationToken read GetCancellationToken;
property Comm: IOmniCommunicationEndpoint read GetComm;
property ExitCode: integer read GetExitCode;
property ExitMessage: string read GetExitMessage;
property FatalException: Exception read GetFatalException;
property Lock: TSynchroObject read GetLock;
property Name: string read GetName;
property Param: TOmniValueContainer read GetParam;
property UniqueID: int64 read GetUniqueID;
property UserData[const idxData: TOmniValue]: TOmniValue read GetUserDataVal write SetUserDataVal;
end; { IOmniTaskControl }
// Implementation details, needed by the OtlEventMonitor. Not for public consumption.
IOmniTaskControlSharedInfo = interface(IOmniTaskControl) ['{5C3262CC-C941-406B-81CC-0E3B608E9077}']
function GetSharedInfo: TOmniSharedTaskInfo;
//
property SharedInfo: TOmniSharedTaskInfo read GetSharedInfo;
end; { IOmniTaskControlSharedInfo }
IOmniTaskControlListEnumerator = interface
function GetCurrent: IOmniTaskControl;
function MoveNext: boolean;
property Current: IOmniTaskControl read GetCurrent;
end; { IOmniTaskControlListEnumerator }
IOmniTaskControlList = interface
function Get(idxItem: integer): IOmniTaskControl;
function GetCapacity: integer;
function GetCount: integer;
procedure Put(idxItem: integer; const value: IOmniTaskControl);
procedure SetCapacity(const value: integer);
procedure SetCount(const value: integer);
//
function Add(const item: IOmniTaskControl): integer;
procedure Clear;
procedure Delete(idxItem: integer);
procedure Exchange(idxItem1, idxItem2: integer);
function First: IOmniTaskControl;
function GetEnumerator: IOmniTaskControlListEnumerator;
function IndexOf(const item: IOmniTaskControl): integer;
function IndexOfID(uniqueID: int64): integer;
procedure Insert(idxItem: integer; const item: IOmniTaskControl);
function Last: IOmniTaskControl;
function Remove(const item: IOmniTaskControl): integer;
function RemoveByID(uniqueID: int64): integer;
property Capacity: Integer read GetCapacity write SetCapacity;
property Count: integer read GetCount write SetCount;
property Items[idxItem: integer]: IOmniTaskControl read Get write Put; default;
end; { IOmniTaskControlList }
//v1.1 extensions:
// maybe: Comm: IOmniCommunicationEndpoint, which is actually one-to-many-to-one
// function Sequential: IOmniTaskGroup;
// function Parallel(useThreadPool: IOmniThreadPool): IOmniTaskGroup;
// maybe: if one of group processes dies, TerminateAll should automatically happen?
IOmniTaskGroup = interface ['{B36C08B4-0F71-422C-8613-63C4D04676B7}']
function GetTasks: IOmniTaskControlList;
//
function Add(const taskControl: IOmniTaskControl): IOmniTaskGroup;
function GetEnumerator: IOmniTaskControlListEnumerator;
function RegisterAllCommWith(const task: IOmniTask): IOmniTaskGroup;
function Remove(const taskControl: IOmniTaskControl): IOmniTaskGroup;
function RunAll: IOmniTaskGroup;
procedure SendToAll(const msg: TOmniMessage);
function TerminateAll(maxWait_ms: cardinal = INFINITE): boolean;
function UnregisterAllCommFrom(const task: IOmniTask): IOmniTaskGroup;
function WaitForAll(maxWait_ms: cardinal = INFINITE): boolean;
property Tasks: IOmniTaskControlList read GetTasks;
end; { IOmniTaskGroup }
TOmniSharedTaskInfo = class
strict private
ostiCancellationToken : IOmniCancellationToken; // must be the first field for alignment
strict private
ostiChainIgnoreErrors : boolean;
ostiChainTo : IOmniTaskControl;
ostiCommChannel : IOmniTwoWayChannel;
ostiCounter : IOmniCounter;
ostiLock : TSynchroObject;
{$IFDEF MSWINDOWS}
ostiMonitor : TOmniContainerWindowsMessageObserver;
{$ENDIF MSWINDOWS}
ostiMonitorLock : TOmniCS;
ostiStopped : boolean;
ostiTaskName : string;
ostiTerminatedEvent : TOmniTransitionEvent;
ostiTerminateEvent : TOmniTransitionEvent;
ostiTerminating : boolean;
ostiUniqueID : int64;
strict protected
function GetCancellationToken: IOmniCancellationToken;
protected
procedure SetCancellationToken(const token: IOmniCancellationToken);
public
property CancellationToken: IOmniCancellationToken read GetCancellationToken;
property ChainIgnoreErrors: boolean read ostiChainIgnoreErrors write ostiChainIgnoreErrors;
property ChainTo: IOmniTaskControl read ostiChainTo write ostiChainTo;
property CommChannel: IOmniTwoWayChannel read ostiCommChannel write ostiCommChannel;
property Counter: IOmniCounter read ostiCounter write ostiCounter;
property Lock: TSynchroObject read ostiLock write ostiLock;
{$IFDEF MSWINDOWS}
property Monitor: TOmniContainerWindowsMessageObserver read ostiMonitor write ostiMonitor;
{$ENDIF MSWINDOWS}
property MonitorLock: TOmniCS read ostiMonitorLock;
property Stopped: boolean read ostiStopped write ostiStopped;
property TaskName: string read ostiTaskName write ostiTaskName;
property TerminatedEvent: TOmniTransitionEvent read ostiTerminatedEvent write ostiTerminatedEvent;
property TerminateEvent: TOmniTransitionEvent read ostiTerminateEvent write ostiTerminateEvent;
property Terminating: boolean read ostiTerminating write ostiTerminating;
property UniqueID: int64 read ostiUniqueID write ostiUniqueID;
end; { TOmniSharedTaskInfo }
function CreateTask(worker: TOmniTaskProcedure; const taskName: string = ''): IOmniTaskControl; overload;
function CreateTask(worker: TOmniTaskMethod; const taskName: string = ''): IOmniTaskControl; overload;
function CreateTask(const worker: IOmniWorker; const taskName: string = ''): IOmniTaskControl; overload;
// function CreateTask(worker: IOmniTaskGroup; const taskName: string = ''): IOmniTaskControl; overload;
{$IFDEF OTL_Anonymous}
function CreateTask(worker: TOmniTaskDelegate; const taskName: string = ''): IOmniTaskControl; overload;
{$ENDIF OTL_Anonymous}
function CreateTaskGroup: IOmniTaskGroup;
function CreateTaskControlList: IOmniTaskControlList;
type
TOmniInternalMessageType = (imtStringMsg, imtAddressMsg, imtFuncMsg);
TOmniInternalMessage = class
strict private
imInternalMessageType: TOmniInternalMessageType;
public
class function InternalType(const msg: TOmniMessage): TOmniInternalMessageType;
constructor Create(internalMessageType: TOmniInternalMessageType);
property InternalMessageType: TOmniInternalMessageType read imInternalMessageType;
end; { TOmniInternalMessage }
TOmniInternalStringMsg = class(TOmniInternalMessage)
strict private
ismMsgData: TOmniValue;
ismMsgName: string;
public
class function CreateMessage(const msgName: string; msgData: TOmniValue): TOmniMessage; inline;
class procedure UnpackMessage(const msg: TOmniMessage; var msgName: string;
var msgData: TOmniValue); inline;
constructor Create(const msgName: string; const msgData: TOmniValue);
property MsgData: TOmniValue read ismMsgData;
property MsgName: string read ismMsgName;
end; { TOmniInternalStringMsg }
TOmniInternalAddressMsg = class(TOmniInternalMessage)
strict private
ismMsgData : TOmniValue;
ismMsgMethod: pointer;
public
class function CreateMessage(const msgMethod: pointer; msgData: TOmniValue):
TOmniMessage; inline;
class procedure UnpackMessage(const msg: TOmniMessage; var msgMethod: pointer; var
msgData: TOmniValue); inline;
constructor Create(const msgMethod: pointer; const msgData: TOmniValue);
property MsgData: TOmniValue read ismMsgData;
property MsgMethod: pointer read ismMsgMethod;
end; { TOmniInternalAddressMsg }
{$IFDEF OTL_Anonymous}
TOmniInternalFuncMsg = class(TOmniInternalMessage)
strict private
ifmFunc : TOmniTaskControlInvokeFunction;
ifmFuncEx : TOmniTaskControlInvokeFunctionEx;
ifmTaskFunc: TOmniTaskInvokeFunction;
public
class function CreateMessage(func: TOmniTaskControlInvokeFunction): TOmniMessage; overload; inline;
class function CreateMessage(func: TOmniTaskControlInvokeFunctionEx): TOmniMessage; overload; inline;
class function CreateMessage(func: TOmniTaskInvokeFunction): TOmniMessage; overload;
inline;
class procedure UnpackMessage(const msg: TOmniMessage; var func: TOmniTaskControlInvokeFunction;
var funcEx: TOmniTaskControlInvokeFunctionEx); overload;
class function UnpackMessage(const msg: TOmniMessage; var func: TOmniTaskInvokeFunction):
boolean; overload;
constructor Create(func: TOmniTaskControlInvokeFunction); overload;
constructor Create(func: TOmniTaskControlInvokeFunctionEx); overload;
constructor Create(func: TOmniTaskInvokeFunction); overload;
property Func: TOmniTaskControlInvokeFunction read ifmFunc;
property FuncEx: TOmniTaskControlInvokeFunctionEx read ifmFuncEx;
property TaskFunc: TOmniTaskInvokeFunction read ifmTaskFunc;
end; { TOmniInternalFuncMsg }
{$ENDIF OTL_Anonymous}
TOmniInvokeType = (itUnknown, itSelf, itSelfAndOmniValue, itSelfAndObject);
TOmniInvokeSignature_Self = procedure(Self: TObject);
TOmniInvokeSignature_Self_OmniValue = procedure(Self: TObject; var value: TOmniValue);
TOmniInvokeSignature_Self_Object = procedure(Self: TObject; var obj: TObject);
TOmniInvokeInfo = class
strict private
oiiAddress : pointer;
oiiSignature: TOmniInvokeType;
public
constructor Create(methodAddr: pointer; methodSignature: TOmniInvokeType);
property Address: pointer read oiiAddress;
property Signature: TOmniInvokeType read oiiSignature;
end; { TOmniInvokeInfo }
TOmniTaskControlOption = (tcoAlertableWait, tcoMessageWait, tcoForceExecution);
TOmniTaskControlOptions = set of TOmniTaskControlOption;
TOmniExecutorType = (etNone, etMethod, etProcedure, etWorker, etFunction);
TOmniTaskTimerInfo = class
strict private
ottiInterval_ms: cardinal;
ottiMessageID : TOmniMessageID;
ottiTimerID : integer;
public
constructor Create(timerID: integer; interval_ms: cardinal; messageID: TOmniMessageID);
property Interval_ms: cardinal read ottiInterval_ms write ottiInterval_ms;
property MessageID: TOmniMessageID read ottiMessageID write ottiMessageID;
property TimerID: integer read ottiTimerID write ottiTimerID;
end; { TOmniTaskTimerInfo }
TOmniTaskControl = class;
TOmniTaskExecutor = class
strict private type
TOmniMessageInfo = record
IdxFirstMessage : integer;
IdxFirstTerminate : integer;
IdxFirstWaitObject: integer;
IdxLastMessage : integer;
IdxLastTerminate : integer;
IdxLastWaitObject : integer;
IdxRebuildHandles : integer;
NewMessageEvent : TOmniTransitionEvent;
NumWaitHandles : integer;
WaitHandles : {$IFDEF MSWINDOWS}array of THandle{$ELSE}TOmniSynchroArray{$ENDIF};
Waiter : TWaitFor;
{$IFDEF MSWINDOWS}
WaitFlags : DWORD;
WaitWakeMask : DWORD;
{$ELSE}
WaitWakeAll : boolean;
{$ENDIF ~MSWINDOWS}
function AsString: string;
{$IFNDEF MSWINDOWS}
function GetSynchroIndex(WaitResult: TWaitResult; const Handle: IOmniSynchro): integer;
{$ENDIF ~MSWINDOWS}
end;
strict private // those must be 4-aligned, keep them on the top
oteInternalLock : TOmniCS;
oteOptionsLock : TOmniCS;
oteTimerLock : TOmniCS;
strict private
oteCommList : TInterfaceList;
oteCommNewMsgList : {$IFDEF MSWINDOWS}TGpInt64List{$ELSE}TList<IOmniEvent>{$ENDIF};
oteCommRebuildHandles: TOmniTransitionEvent;
oteException : Exception;
oteExecutorType : TOmniExecutorType;
oteExitCode : TOmniAlignedInt32;
oteExitMessage : string;
{$IFDEF OTL_Anonymous}
oteFunc : TOmniTaskDelegate;
{$ENDIF OTL_Anonymous}
oteMethod : TOmniTaskMethod;
oteMethodHash : TGpStringObjectHash;
oteMsgInfo : TOmniMessageInfo;
oteOptions : TOmniTaskControlOptions;
oteOwner_ref : TOmniTaskControl;
otePriority : TOTLThreadPriority;
oteProc : TOmniTaskProcedure;
oteTerminateHandles : {$IFDEF MSWINDOWS}TGpInt64List{$ELSE}TOmniSynchroArray{$ENDIF};
oteTerminating : boolean;
oteTimers : TGpInt64ObjectList;
{$IFDEF MSWINDOWS}
oteWakeMask : DWORD;
{$ELSE}
oteWakeAll : boolean;
{$ENDIF ~MSWINDOWS}
oteWaitHandlesGen : int64;
oteWaitObjectList : TOmniWaitObjectList;
oteWorkerInitialized : TOmniTransitionEvent;
oteWorkerInitOK : boolean;
oteWorkerIntf : IOmniWorker;
strict protected
procedure CallOmniTimer;
procedure CheckTimers;
procedure Cleanup;
procedure DispatchCommMessage(newMsgHandle: TOmniTransitionEvent;
const task: IOmniTask; var msgInfo: TOmniMessageInfo);
procedure DispatchMessages(const task: IOmniTask);
function GetExitCode: integer; inline;
function GetExitMessage: string;
function GetImplementor: TObject;
procedure GetMethodAddrAndSignature(const methodName: string;
var methodAddress: pointer; var methodSignature: TOmniInvokeType);
procedure GetMethodNameFromInternalMessage(const msg: TOmniMessage;
var msgName: string; var msgData: TOmniValue {$IFDEF OTL_Anonymous};
var func: TOmniTaskControlInvokeFunction; var funcEx: TOmniTaskControlInvokeFunctionEx {$ENDIF OTL_Anonymous});
function GetOptions: TOmniTaskControlOptions;
function HaveElapsedTimer: boolean;
procedure Initialize;
procedure InsertTimer(wakeUpTime_ms: int64; timerInfo: TOmniTaskTimerInfo);
function LocateTimer(timerID: integer): integer;
{$IFDEF MSWINDOWS}
procedure ProcessThreadMessages;
{$ENDIF MSWINDOWS}
procedure RaiseInvalidSignature(const methodName: string);
procedure RemoveTerminationEvents(const srcMsgInfo: TOmniMessageInfo; var dstMsgInfo:
TOmniMessageInfo);
procedure ReportInvalidHandle(msgInfo: TOmniMessageInfo);
procedure SetOptions(const value: TOmniTaskControlOptions);
procedure SetTimer(timerID: integer; interval_ms: cardinal; const timerMessage:
TOmniMessageID);
function TestForInternalRebuild(const task: IOmniTask;
var msgInfo: TOmniMessageInfo): boolean;
protected
function DispatchEvent(awaited: TWaitFor.TWaitForResult; const task: IOmniTask;
var msgInfo: TOmniMessageInfo{$IFNDEF MSWINDOWS}; SignalEvent: IOmnIEvent{$ENDIF}): boolean; virtual;
procedure DispatchOmniMessage(msg: TOmniMessage; doCheckTimers: boolean); virtual;
procedure MainMessageLoop(const task: IOmniTask; var msgInfo: TOmniMessageInfo); virtual;
procedure MessageLoopPayload; virtual;
procedure ProcessMessages(task: IOmniTask); virtual;
procedure RebuildWaitHandles(const task: IOmniTask; var msgInfo: TOmniMessageInfo); virtual;
function TimeUntilNextTimer_ms: cardinal; virtual;
function WaitForEvent(const msgInfo: TOmniMessageInfo; timeout_ms: cardinal
{$IFNDEF MSWINDOWS}; var SignalEvent: IOmniEvent{$ENDIF}): TWaitFor.TWaitForResult; virtual;
public
constructor Create(owner_ref: TOmniTaskControl; const workerIntf: IOmniWorker); overload;
constructor Create(owner_ref: TOmniTaskControl; method: TOmniTaskMethod); overload;
constructor Create(owner_ref: TOmniTaskControl; proc: TOmniTaskProcedure); overload;
{$IFDEF OTL_Anonymous}
constructor Create(owner_ref: TOmniTaskControl; func: TOmniTaskDelegate); overload;
{$ENDIF OTL_Anonymous}
destructor Destroy; override;
procedure Asy_Execute(const task: IOmniTask);
procedure Asy_RegisterComm(const comm: IOmniCommunicationEndpoint);
procedure Asy_RegisterWaitObject(waitObject: TOmniTransitionEvent; responseHandler: TOmniWaitObjectMethod);
procedure Asy_SetExitStatus(exitCode: integer; const exitMessage: string);
procedure Asy_SetTimer(timerID: integer; interval_ms: cardinal; const timerMessage:
TOmniMessageID); overload;
procedure Asy_UnregisterComm(const comm: IOmniCommunicationEndpoint);
procedure Asy_UnregisterWaitObject(waitObject: TOmniTransitionEvent);
procedure EmptyMessageQueues(const task: IOmniTask);
procedure TerminateWhen(handle: TOmniTransitionEvent); overload;
function WaitForInit: boolean;
property ExitCode: integer read GetExitCode;
property ExitMessage: string read GetExitMessage;
property Implementor: TObject read GetImplementor;
property Options: TOmniTaskControlOptions read GetOptions write SetOptions;
property Priority: TOTLThreadPriority read otePriority write otePriority;
property TaskException: Exception read oteException write oteException;
property Terminating: boolean read oteTerminating write oteTerminating;
{$IFDEF MSWINDOWS}
property WakeMask: DWORD read oteWakeMask write oteWakeMask;
{$ELSE}
property WakeAll: boolean read oteWakeAll write oteWakeAll;
{$ENDIF ~MSWINDOWS}
property WorkerInitialized: TOmniTransitionEvent read oteWorkerInitialized;
property WorkerInitOK: boolean read oteWorkerInitOK;
property WorkerIntf: IOmniWorker read oteWorkerIntf;
end; { TOmniTaskExecutor }
TOmniTask = class(TInterfacedObject, IOmniTask, IOmniTaskExecutor)
strict private
otCleanupLock : TOmniMREW;
otExecuting : boolean;
otExecutor_ref : TOmniTaskExecutor;
otParameters_ref : TOmniValueContainer;
otSharedInfo_ref : TOmniSharedTaskInfo;
otTerminateWillCallExecute: boolean;
otThreadData : IInterface;
otThreadID : TThreadID;
protected
function GetCancellationToken: IOmniCancellationToken; inline;
function GetComm: IOmniCommunicationEndpoint; inline;
function GetCounter: IOmniCounter;
function GetImplementor: TObject;
function GetLock: TSynchroObject;
function GetName: string; inline;
function GetParam: TOmniValueContainer; inline;
function GetTerminateEvent: TOmniTransitionEvent; inline;
function GetThreadData: IInterface; inline;
function GetUniqueID: int64; inline;
procedure InternalExecute(calledFromTerminate: boolean);
procedure SetThreadData(const value: IInterface); inline;
procedure Terminate;
public
constructor Create(executor: TOmniTaskExecutor; parameters: TOmniValueContainer;
sharedInfo: TOmniSharedTaskInfo);
procedure ClearTimer(timerID: integer = 0);
procedure Enforced(forceExecution: boolean = true);
procedure Execute;
{$IFDEF OTL_Anonymous}
procedure Invoke(remoteFunc: TOmniTaskInvokeFunction);
{$ENDIF OTL_Anonymous}
procedure RegisterComm(const comm: IOmniCommunicationEndpoint);
procedure RegisterWaitObject(waitObject: TOmniTransitionEvent; responseHandler: TOmniWaitObjectMethod); overload;
procedure SetException(exceptionObject: pointer);
procedure SetExitStatus(exitCode: integer; const exitMessage: string);
procedure SetTimer(interval_ms: cardinal); overload;
procedure SetTimer(interval_ms: cardinal; const timerMessage: TOmniMessageID); overload;
procedure SetTimer(timerID: integer; interval_ms: cardinal;
const timerMessage: TOmniMessageID); overload;
function Stopped: boolean;
procedure StopTimer;
function Terminated: boolean;
procedure UnregisterComm(const comm: IOmniCommunicationEndpoint);
procedure UnregisterWaitObject(waitObject: TOmniTransitionEvent);
property CancellationToken: IOmniCancellationToken read GetCancellationToken;
property Comm: IOmniCommunicationEndpoint read GetComm;
property Counter: IOmniCounter read GetCounter;
property Implementor: TObject read GetImplementor;
property Lock: TSynchroObject read GetLock;
property Name: string read GetName;
property Param: TOmniValueContainer read GetParam;
property SharedInfo: TOmniSharedTaskInfo read otSharedInfo_ref;
property TerminateEvent: TOmniTransitionEvent read GetTerminateEvent;
property ThreadData: IInterface read GetThreadData;
property UniqueID: int64 read GetUniqueID;
end; { TOmniTask }
TOmniThread = class(TThread) // Factor this class into OtlThread unit?
strict private
otTask: IOmniTask;
{$IFNDEF MSWINDOWS}
otThreadTerminationEvent: IOmniEvent;
{$ENDIF}
protected
procedure Execute; override;
{$IFNDEF MSWINDOWS}
procedure DoTerminate; override;
{$ENDIF}
public
constructor Create(task: IOmniTask);
property Task: IOmniTask read otTask;
{$IFNDEF MSWINDOWS}
property ThreadTerminationEvent: IOmniEvent read otThreadTerminationEvent;
{$ENDIF}
end; { TOmniThread }
TOmniTaskControlInternalDebugFlag = (dfLogDispatch);
TOmniTaskControlInternalDebugFlags = set of TOmniTaskControlInternalDebugFlag;
IOmniTaskControlInternals = interface ['{CE7B53E0-902E-413F-AB6E-B97E7F4B0AD5}']
function GetDebugFlags: TOmniTaskControlInternalDebugFlags;
function GetTerminatedEvent: TOmniTransitionEvent;
procedure SetDebugFlags(const value: TOmniTaskControlInternalDebugFlags);
//
function FilterMessage(const msg: TOmniMessage): boolean;
procedure ForwardTaskMessage(const msg: TOmniMessage);
procedure ForwardTaskTerminated;
property DebugFlags: TOmniTaskControlInternalDebugFlags read GetDebugFlags
write SetDebugFlags;
property TerminatedEvent: TOmniTransitionEvent read GetTerminatedEvent;
end; { IOmniTaskControlInternals }
TOmniTaskControl = class(TInterfacedObject, IOmniTaskControl, IOmniTaskControlSharedInfo, IOmniTaskControlInternals)
{$IFDEF OTL_Anonymous}
strict private
otcOnTerminatedSimple : TOmniOnTerminatedFunctionSimple;
{$ENDIF OTL_Anonymous}
strict private
otcDebugFlags : TOmniTaskControlInternalDebugFlags;
otcDelayedTerminate : boolean;
otcDestroyLock : boolean;
otcEventMonitor : TObject{TOmniEventMonitor};
otcEventMonitorInternal: boolean;
otcExecutor : TOmniTaskExecutor;
otcInEventHandler : boolean;
otcOnMessageExec : TOmniMessageExec;
otcOnMessageList : TGpIntegerObjectList;
otcOnTerminatedExec : TOmniMessageExec;
otcOwningPool : IOmniThreadPool;
otcParameters : TOmniValueContainer;
otcQueueLength : integer;
otcSharedInfo : TOmniSharedTaskInfo;
otcTerminateTokens : TInterfaceList;
otcThread : TOmniThread;
otcUserData : TOmniValueContainer;
{$IFNDEF MSWINDOWS}
FMultiWaitLock : IOmniCriticalSection;
{$ENDIF ~MSWINDOWS}
strict protected
procedure CreateInternalMonitor;
function CreateTask: IOmniTask;
procedure DestroyMonitor;
procedure EnsureCommChannel; inline;
procedure Initialize(const taskName: string);
protected
function FilterMessage(const msg: TOmniMessage): boolean;
procedure ForwardTaskMessage(const msg: TOmniMessage);
procedure ForwardTaskTerminated;
function GetCancellationToken: IOmniCancellationToken;
function GetComm: IOmniCommunicationEndpoint; inline;
function GetDebugFlags: TOmniTaskControlInternalDebugFlags;
function GetExitCode: integer; inline;
function GetExitMessage: string; inline;
function GetFatalException: Exception;
function GetLock: TSynchroObject;
function GetName: string; inline;
function GetOptions: TOmniTaskControlOptions;
function GetParam: TOmniValueContainer;
function GetSharedInfo: TOmniSharedTaskInfo;
function GetTerminatedEvent: TOmniTransitionEvent;
function GetTerminateEvent: TOmniTransitionEvent;
function GetUniqueID: int64; inline;
function GetUserDataVal(const idxData: TOmniValue): TOmniValue;
procedure SetDebugFlags(const value: TOmniTaskControlInternalDebugFlags);
procedure SetOptions(const value: TOmniTaskControlOptions);
function SetPriority(threadPriority: TOTLThreadPriority): IOmniTaskControl;
procedure SetUserDataVal(const idxData: TOmniValue; const value: TOmniValue);